Packing-can and art of making same.



H. C. HUNTER. PACKING FAN AND ART OF MAKING SAME.

Mppiiatian. filed m 23. was.)

No. 554,255. Patented July 24, I900.

(940 Nodal.)

NIT-FED STATES ATENT OF ICE.

HENRY o. HUNTER, or HAMILTON, CANADA, ASSIGNOR, BY MESNE ASSIGNM MENTS, TO THE CANISTERMANUFACTURING COMPANY, OF PHILLIPS- BURG, PENNSYLVANIA.

PACKING-CAN AND ART OF MAKING SAM E.

SPECIFICATION forming part Of Letters Patent No. 654,255, dated July 24, I900. application filed my 28, 1898: SerialNo- 686,734. (No model.)

To all whom it'may' concern:

'Be it known that I, HENRY G. HUNTER, a citizen of the United States, residing at Hamilton, Ontario, Canada, have invented certain new and useful Improvements in Packing- Cans and in the Art of Making Same, of which the following is a specification.

Myinvention is designed for that class of cans in which a metallic head is combined with re a body of fibrous board; but its use is not necessarily limited to cans of that particular class. In cans of that class, however, in which the contents, thoughbetter kept inclosed from the air, are not of the perishable sort and the entire contents of the can are not ordinarily used at once, but in parts and at intervals, it is desirable and convenient to keep the unused contents in the can in which they are purchased. For this reason such cans have been supplied with removable caps, combined with an opening in the head of the can, such openings being necessarily much smaller than the head of the can. Apart from the addi tional cost of these caps, which in'cans sold with the contents is a considerable item, the

reduced opening covered by the cap is inconvenient both for the filling and emptying of the can. This is especially true when the contents are starch or materials of like condition. For this reason it is of great importance to provide an opening of the full inner diameter of the can and, further, to provide for a cover which may be applied readily and removed at will. To meet these requirements and at the same time not depart from the general construction of the can above indicatedthat is to say, cans having metallic heads fixed to the body of the can -is the object of my invention.

4o I'Ihis invention includes a special construction of the head, whereby it is adapted to per-'- mit of the ready removal of the entige covering portionin fact, of the whole head, with the exception of the marginal arts, which cover and adhere to the edge 0 .the fibrous body-blank and form theprotection and finish therefor--thns.forming a clear opening for the removal of the contents, and whereby also a'seat is formed for the supplemental cover,

which seat is left after the remo valot the head by rupture on the weakened line and is adapted to retain the supplemental cover securely and yet removably.

Myinvention furtherincludesaform ofsup plemental cover specially adapted to and combined with the heads or head and bottom of r the can, whereby easy frictional contact is had therewith and whereby also the supplemental cover is maintained in proper condition and a convenient and improved article of trade formed, consisting-of the supplemental cover and the head, all as hereinafter fully set forth. My invention is illustrated in the accom panying drawings, in which- Figure 1 represents a perspective view of the can. Fig. 2 is a cross-sectional view-of a can-body. Fig.3representsaverticalsection of a can. Fig. 4 is a sectional view of the top and bottom head and the supplemental cover nested together. Fig. 5 shows the supplemental cover in use. Fig. 6 represents a plan view of the metallic head. Fig. 7 is a plan view of the supplemental fiber cover. Fig. '8 is a sectional View of the fiber cover. In the drawings the body of the can is shown at A. It maybe of any desired shape in cross- I section and is preferably made of stout fibrous sheets. It is shown as having flat sides and rounded corners. The head of the can is formed of sheet metal or equivalent material. I use, by preference, tin. It is formed with a depressed body part A',with a marginal grasping-flange, by turning the edge of the blank upward and then over and downward, so as to leave an interior wall 2 around the margin of the head, which extends at right angles to the plane surface'A of the head. The outside and downwardly-projecting flange is marked 3, and the channel which receives and grips the edge of the body B is marked 4. This channel is the same substantially as heretofore shown by me in a head hava ing a central openingand cap of considerably less area than the head. In under to get rid of this narrow opening, through which some kinds of goodssuch as starch, for example-are difficult to pour,-an'd at the, same time to provide for easy opening and recovering of the can, I provide aweakened line, as I00 at :c, all around the plane surface A' of the head and at the bottom of the inclined wall 2. This weakened line is formed by thinning the metal on this line to such an extent that it may be ruptured by a light blow from any can, it having been previously sealed tight or air-tight, and remove the entire covering portion of the head, leaving an opening of substantially the full diameter of the can, and

after removal of part of the contents may cover made of fibrous material, such as wood:

pulp board. The supplemental cover shown is formed of this material. It is struck up out of sheet material on a heated die, and neoessarily the flanges 10 are slightly flaring. In order to retain these in shape, it'is necessary to let them cool upon the die or to confine them until the fiber setsfotherwise they lose shape in cooling andbecome. useless. To retain them upon the die until cool is impracticable. I contemplate furnishing these covers to the dealers, together with the two heads (top and bottom) of the can and the "body-blank, with the connecting-strip 0. (shown in Figs. 1 and 2) for the side seam. The bottom is exactly like the top, with the exception of the weakened line. I have.

: therefore hit upon the idea of inclosing the covers while hot in the cavity of the top and bottom, placed reversely to each other, as shown in Fig. 4. To accomplish this, I make the cover-flange of substantially twice the depth of the inner wall of the head. The cover is taken while hot from the press and is placed in the head B in the position it will occupy in use. It adheres by frictional contact, and the bottom D is inverted over it, and the completed article comprises, with the body-blank and side strip attached, all that is nry for a can, and these are sold to the dealer, who may keep them in stock as finished cans were kept prior to my invention, but more conveniently and in less space. The rim of the cover is slightly flared, while that of the head is at right angles to the main part. The time elapsing between this nesting of heads and cover and the use of them allows the cover to set and exactly fit its seat with proper adhesion. Its depth of flangedouble that of the wall of its seat in the head-leaves a suflicient part above the can By means of this construction the user may easily open the a reinforcement and finish to said edge, as

well as a seat for the supplemental cover, and the packing-can in which the goods are put up becomes when opened by rupture of the head A and application of thecover a neat and useful canister for the goods, keeping them under practically-hermetical seal and permitting free removal.

I claim- 1. A head for cans having an unbroken raised flange around the plane surface of the head which is depressed in respect to thebody of the can, said raised flange having a turnedover edge adapted to grip the edge of the canbody between itself and the outer face of the flange and having also a weakened line on the margin of said plane surface extending entirely around the margin and at a slight distance inwardly from the flange to leave a continuous ledge and a cover adapted to rest on the seat left next to the inner wall of the flange, substantially as described.

2. A head for cans having a raised flange raised flange havinga turned-over edge adapted to grip the edge of the can-body between itself and the flange and having also aweakened line extending continuously around the margin of said lane surface next to the innor wall of the ange, in combination with a fiber cover having a flange of depth greater than the depth of said raised flange, substantially as described.

3. As an article of manufacture, a can-head having a raised flange around the depressed plane surface of the head, said raised flange having a turned over edge adapted to be gripped upon the edge of the canbody and having also 'a weakened line on the margin of said plane surface, combined with a reversed bottom of the same shape and an inclosed fibrous cover having a flange of substantially twice the depth of the head-flange,

said cover fitting in the space formed between the outer depressed surfaces of the head and bottom, substantially as described.

4. As an article of manufacture, a can-head having a flange extending aroundits plane surface forming a receiving-space, a bottom having a flange extending around its plane surface forminga receiving-space, and a cover for the can inclosed between the head and bottom of the can and fltting in the receiving-spaces of both,-substantiallyas described.

5. As an article of manufacture, scan-head having a flange extending around its plane surface forming a receiving-space, said head having also a weakened line extending continuously around the plane surface at a slight distance inwardly from the flange to leave a continuous ledge or seat for a cover, a bottom having a flange extending around its plane surface forming a receiving-space and acover for the can inclosed between the head and around" the plane surface of the head, said bottom ofjhe can and fitting in the receiving-. and ledge serving to re iain a cover in place,

spaces of both, snbstantially as described. substantially as described. a 4 to 6.v A head for cans having a continuous In testimony whereof I affix my signature raised fiangeand a weakened line extending in presence .of two witnesses. 5 -contin'n0nsly about the head. eta slight 'dis- HENRY C. HUNTER. tanee inwardly frem'thecontinuonsraised Witnesses:

-fia.:1ge to leave a ledge whenthe weakened J W. TERRY,

portion is broken in, said continuons fla nge 4 H." C. GWYN. 

